Electrically-driven shaker molding-machine



K. O. DAHLNEYER.

ELECTRICALLY DRIVEN SHAKER MOLDING MACHINE.

APPLICATION FILED FEB. 10, 1916.

1,344,680. Patented June 29, 1920.

3 SHEETS-SHEET I.

Fig 1.

K. 0. DAHLMEYER.

ELECTRICALLY DRIVEN SHAKER MOLDING MACHINE.

APPLICATION FILED FEB., 10. 19m.

1, 344,680. Patented June 29, 1920.

3 SHEETS-SHEET 2.

Figs? W W- {9" ep K. 0. DAHLMEYER.

ELECTRICALLY DRIVEN SHAKER MOLDING MACHINE.

APPLICATION FILED FEB I0| 1916.

1 344:, 680. Patented June 29, 1920.

3 SHEETS-SHEET 3.

-UNITE-DIST ATES PATENT OFFICE.

o-rro nan tnnvnia, GERMANY, ASSIGNOB, BY MESNE ASSIGN- mas, T mun CHEMICAL roummrron, me, a CORPORATION or DELA- I To all whom it may concern:

Be it known that I, KARL Orro Dam.-

- MEYER, chief engineer, a subject of the Gerchine.

man Emperor, and resident of N o. 12 Orcfelderstrasse, in the city of Berlin, Germany, have invented new and useful Improvements in ElectrieallyDriven Shaker Molding-Machine s, of which the following is a specification. j T

The present invention relates to an improvement in electrically driven shaker molding machines. ment essentially consistsin the anvil being made of two parts, of which the onepart serves as electromagnet, the othenas anvil.- These two partsmay be attached to each other. It is, however, preferable to separate them, in which case the part serving as electric magnet is rigidly attached to the bed-plate, and doesnot participate in the movementsfand Vibrations of the ma- The', general object of the present invention is to allow, for the construction of the electric magnet, the use-of a material which is particularly readily magnetized and again 'demagnetized under action of the electric currents, namely wrought iron or cast steel, .whereas any suitable material may be used,'independently therefrom, for the anvil, such as common cast iron. The electromagnet may, in such case, be constructed of several sections, and provision may be made thereby to prevent, as far as possible, electric and magnetic eddy currents.

The invention has the'further object of saving the windings of the solenoid as much as possible. When the electromagnet is stationary, such saving is self-evident; but when it is rigidly 'attached to the anvil part, it is advisable to insert between these two parts a layer of slightly elastic material; oi' the solenoid coil is attached to the bed-plate and does not participate in the' movements of the electromagnet.

In the accompanying drawing the present invention is exemplified in three embodim'ents: A

Figure 1 shows a central vertical section through the anvil and armature, the table and mold being shown in elevation and the anvil being shown in two parts, one fixed and the other movable.

Fig. 2 is a similar view showing the two The present improvenLncrmcAL Y-niuvi n SHAKER moLnme-mncnmn.

Specification of Letters mum. t t June 29, 1920, Application .aiea February 10, 1916. Serial m. 77,521.

parts of the anvil connected together and I both movable; and

Fig. 3 is a similar view showing the parts of the anvil connected together and movable with the solenoid coils fixed to the bedplate.

In the embodiment according to Fig. 1, (1 represents the table, which carries the form b; the anvil is composed of two parts 0 and 0 The part c is attached to the bed-plate d by means of one pillar or several pillars ti it therefore does not participate in the resiliently supported on the bed-plate d by means of pillars f and springs e and carries on its striking surface 0 the table supporting the mold 5. Only a single one of the pillars springs e, and rods 9 are shown; but these would obviously be symmetricall disposed on each side of the machine; and, the figures being in section, the corresponding parts in the front half of the figures would not be shown. When the electromagnetic part c is ma tract the armature 9, 1i the table a by aid of pillar a and with it the mold I), while etized, it will at-v the anvil part c, relieved thereby, rises to a smaller de es. When the part 0 is demagnetized, the table a falls, by its gravity, back onto the anvil 0. The shaker effect is thus produced, and under the impact the anvil 0 will drop a little and thereby compress the springs e. It is evident that the part 0 does not participate in the movement or the vibrations at all. The 0 ening and closin of the current may be e ected in any desired manner, eventually by hand, by using a suitable switch, independently of the movement of the table. The switch is, however, preferably operated automatically by the reciprocal movement of the table and the anv'il, asshown in my U. S. Patent No. 1,138,457, granted May 4, 1915, and entitled In the'embodiment shown in 1 1% 2, the parts 0 and c are joined together. etween these parts is inserted a board of asbestos, felt, or the like, 0. The armature g is attached by means of pillar of to the table a, while part 0 rests on springs e,'which are supported by pillars f on the bed-plate.

In this form of device the upper part of the anvil c and the lower part 0 which latter constitutes the electromagnet, together with the coils c of said magnet, are moved together, being normally supported by the springs e. When the current is run through the coils 0 the electromagnet c is energized and the armature g is drawn upward, lifting the table a. At the same time there will be a slight lift of the anvil c, owing to the release of pressure on the springs (2.

When the current is cut off again the armature 9 will drop and with it the table a, and the table will fall on the anvil c, which will compress the springs 6, thus imparting vibratory movement to the mold b.

With the embodiment according to Fig. 3,

- the electric magnet c is attached to the anvil c; the winding of the solenoid 0 is independent of the magnet and is supported from the bed-plate d by means of pillars 0 so that it does not participate in the movement of the armature.

In this form of device, the coilsc are fixed, and the anvil, composed of two parts 0, and the electromagnet a, normally support the table, the whole being supported on the springs e. The action is precisely similar to that referred to in connection with Fig. 2, except that the solenoid coils do not plate, of an anvil composed of two independent parts, the one of said parts solely adapted to perform the electromagnetic functions of the anvil being rigidly attached to the bed-plate, the other part acting as anvil proper and adapted to perform the respective movements.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this eighth day of November 1916.

KARL OTTO DAHLMEYER.

Witnesses:

HENRY HAsPER, ALLEN F. JENNINGS. 

